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02/19/2016 | The K7RA Solar Update
Sunspot numbers slide
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12/19/2014 | The K7RA Solar Update
The Sun made a big comeback
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EXPLORE ARRL
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On The Air
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ARRL
The National Association for Amateur Radio®
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Newington, CT, 06111-1400 USA
Tel: 1-860-594-0200 | Fax: 1-860-594-0259
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hq@arrl.org